Tests: Debug fix copying command

Author: Cawllec

test/expo/scripts/build-ios.sh

@@ -8,7 +8,7 @@ cd test/expo/features/fixtures/test-app
 npm i turtle-cli@0.14 bunyan
 perl -0777 -i.original -pe "s/entitlements\\['aps-environment'\\] =[^;]+;//gs" node_modules/\@expo/xdl/build/detach/IosNSBundle.js
 mkdir -p ~/expo-bundle-files
-cp node_modules/\@expo/xdl/build/detach/IosNSBundle.js >> ~/expo-bundle-files/$EXPO_RELEASE_CHANNEL.js
+cp node_modules/\@expo/xdl/build/detach/IosNSBundle.js ~/expo-bundle-files/$EXPO_RELEASE_CHANNEL.js
 node_modules/.bin/turtle build:ios \
   -c ./app.json \
   --team-id $APPLE_TEAM_ID \